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Non-unitarity of the leptonic mixing matrix in the TeV-scale type-I seesaw model
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.ORCID iD: 0000-0002-3525-8349
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.
2010 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 692, no 4, 257-260 p.Article in journal (Refereed) Published
Abstract [en]

The non-unitarity effects in leptonic flavor mixing are regarded as one of the generic features of the type-1 seesaw model. Therefore, we explore these effects in the TeV-scale type-1 seesaw model, and show that there exist non-trivial correlations among the non-unitarity parameters, stemming from the typical flavor structure of the low-scale seesaw model. In general, it follows from analytical discussions and numerical results that all the six non-unitarity parameters are related to three model parameters, while the widely studied parameters eta(e tau) and eta(mu tau) cannot be phenomenologically significant simultaneously.

Place, publisher, year, edition, pages
Elsevier B.V. , 2010. Vol. 692, no 4, 257-260 p.
Keyword [en]
Leptonic flavor mixing, Seesaw mechanism, Non-unitarity effects
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-26653DOI: 10.1016/j.physletb.2010.07.053ISI: 000282249400007ScopusID: 2-s2.0-77956062289OAI: oai:DiVA.org:kth-26653DiVA: diva2:374239
Funder
Swedish Research Council, 621-2008-4210
Note
QC 20101203Available from: 2011-06-21 Created: 2010-11-26 Last updated: 2011-06-21Bibliographically approved

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Publisher's full textScopusPhysics Letters Bhttp://arxiv.org/abs/1007.0106

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Ohlsson, TommyPopa, ChristophZhang, He
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